Update the cinder-lvm-losetup systemd service to wait until the local
/var directory is mounted and the lvm2-monitor service has started
prior to creating the loopback device used by cinder's LVM backend.
Make LIO SCSI target data persistent by adding container volume mounts
for the /etc/target directory so that the data is stored on the host.
NOTE(stable/train): The setype for persistent directories is set to
svirt_sandbox_file_t, whereas later releases use container_file_t.
Closes-Bug: #1905617
Change-Id: I0c0cbed3a41e8d4b1fbaf5c2dc7fd0412fee644a
(cherry picked from commit 63b2a989ba)
(cherry picked from commit 27678af1ab)
(cherry picked from commit 833e812baf)
98377d0200